Using 'Priority' when checking for timer matches

HISTORY

@@ -70,3 +70,7 @@ Video Disk Recorder Revision History
 - The 'Recordings' menu is now listed alphabetically (thanks to Carsten Koch!).
 - The new 'xtvrc2vdr' tool (thanks to Plamen Ganev!) can be used to convert
   'xtvrc' channel files into 'vdr' format.
+- When more than one timer matches at the same time, the first one in the list
+  with the highest 'Priority' is selected.
+- The MANUAL section on "Programming the Timer" has been filled in.
+

MANUAL

@@ -108,4 +108,43 @@ Video Disk Recorder User's Manual
 * Programming the Timer
 
   Use the "Timer" menu to maintain your list of timer controlled recordings.
+  The parameters in the "Edit Timer" menu have the following meanings:
 
+  Active:    Defines whether the timer will be processed (set it to 'no' to
+             temporarily desable a timer).
+  Channel:   The channel to be recorded (as defined in the "Channels" list).
+             Any changes made in the "Channels" list (like renaming or
+             reordering channels) will be automatically reflected in the
+             timers settings.
+  Day:       The day on which this timer shall start. This can be either a
+             "day of month" (1..31), which allows programming a "single shot"
+             timer that hits once and is deleted after it ends. Single shot
+             timers can be programmed up to one month into the future.
+             Another option here are "repeating timers" which are defined
+             by listing the days of the week on which they shall record.
+             For example, a timer that shall record every monday and wednesday
+             would have a Day setting of "M-W----".
+  Start:     The start time of the timer in hh:mm as 24 hour ("military") time.
+  Stop:      The stop time of the timer.
+  Priority:  The Priority (0..99) is used to decide which timer shall be
+             started in case there are two or more timers with the exact same
+             start time. The first timer in the list with the highest Priority
+             will be used. This value is also stored with the recording and is
+             later used to decide which recording to remove from disk in order
+             to free space for a new recording. If the disk is full and a new
+             recording needs more space, an existing recording with the lowest
+             Priority (and which has exceeded its guaranteed Lifetime) will be
+             removed.
+  Lifetime:  The number of days (0..99) a recording made through this timer is
+             guaranteed to remain on disk before it is automatically removed
+             to free up space for a new recording. Note that setting this
+             parameter to very high values for all recordings may soon fill up
+             the entire disk and cause new recordings to fail due to low disk
+             space.
+  File:      The name under which a recording created through this timer will
+             be stored on disk (the actual name will also contain the date and
+             time, so it is possible to have a "repeating timer" store all its
+             recordings under the same name; they will be distinguishable by
+             their date and time).
+             If this field is left blank, the channel name will be used to form
+             the name of the recording.

config.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: config.c 1.9 2000/07/15 16:35:18 kls Exp $
+ * $Id: config.c 1.10 2000/07/16 11:47:30 kls Exp $
  */
 
 #include "config.h"
@@ -339,10 +339,11 @@ bool cTimer::IsSingleEvent(void)
   return (day & 0x80000000) == 0;
 }
 
-bool cTimer::Matches(void)
+bool cTimer::Matches(time_t t)
 {
   if (active) {
-     time_t t = time(NULL);
+     if (t == 0)
+        t = time(NULL);
      struct tm now = *localtime(&t);
      int weekday = now.tm_wday == 0 ? 6 : now.tm_wday - 1; // we start with monday==0!
      int begin = TimeToInt(start);
@@ -399,13 +400,17 @@ void cTimer::SetRecording(bool Recording)
 
 cTimer *cTimer::GetMatch(void)
 {
-  cTimer *t = (cTimer *)Timers.First();
-  while (t) {
-        if (!t->recording && t->Matches())
-           return t;
-        t = (cTimer *)t->Next();
+  time_t t = time(NULL); // all timers must be checked against the exact same time to correctly handle Priority!
+  cTimer *t0 = NULL;
+  cTimer *ti = (cTimer *)Timers.First();
+  while (ti) {
+        if (!ti->recording && ti->Matches(t)) {
+           if (!t0 || ti->priority > t0->priority)
+              t0 = ti;
+           }
+        ti = (cTimer *)ti->Next();
         }
-  return NULL;
+  return t0;
 }
 
 // -- cKeys ------------------------------------------------------------------

config.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: config.h 1.8 2000/07/15 16:26:57 kls Exp $
+ * $Id: config.h 1.9 2000/07/16 11:41:51 kls Exp $
  */
 
 #ifndef __CONFIG_H
@@ -98,7 +98,7 @@ public:
   bool Parse(char *s);
   bool Save(FILE *f);
   bool IsSingleEvent(void);
-  bool Matches(void);
+  bool Matches(time_t t = 0);
   time_t StartTime(void);
   time_t StopTime(void);
   void SetRecording(bool Recording);